Modification of interior like in a real racecar

It would be great to be able to change the steeringwheel, the original seats for bucketseats with racing harnesses, and if you apply a weight reduction the backseats should be vanished, maybe for some carbonplates, that should be simple to adapt to all cars.

Yes and there should be options to convert normal cars to actual race cars. Not really enjoying modern super cars. Would love “suspension conversion” or something similar to actually change some random 90s nissan to meet modern race car standards.